Single instruction, multiple data (SIMD) extensions have been a feature of choice for processor manufacturers for a couple of decades. Designed to provide significant accelerations, they require expertise, the use of potentially fragile compiler support, or vendor-specific libraries. Here, a C&#x002B;&#x002B; template library called Boost.SIMD is presented that simplifies the exploitation of SIMD hardware within a standing C&#x002B;&#x002B; programming model.